Whitsoft SlimFTPd 3.17 off-by-one

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Whitsoft SlimFTPd 3.17. It has been declared as critical. Affected is an unknown function. The manipulation results in off-by-one. This vulnerability is identified as CVE-2005-2850. Additionally, an exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, was found in Whitsoft SlimFTPd 3.17 (File Transfer Software). Affected is some unknown processing. The manipulation with an unknown input leads to a off-by-one vulnerability. CWE is classifying the issue as CWE-193. A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value. This is going to have an impact on availability. CVE summarizes:

SlimFTPd 3.17 allows remote attackers to cause a denial of service (crash) via certain (1) USER and (2) PASS commands, possibly due to a buffer overflow or off-by-one error.

The bug was discovered 08/31/2005. The weakness was released 09/08/2005 (Website). The advisory is shared for download at critical.lt. This vulnerability is traded as CVE-2005-2850 since 09/08/2005. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but a public exploit is available.

A public exploit has been developed in ANSI C. The exploit is shared for download at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 6 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 19588 (SlimFTPd Username/Password Overflow Remote DoS), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FTP and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 27272 (WhitSoft Development SlimFTPd Remote Denial of Service Vulnerability).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (22254), Tenable (19588), SecurityFocus (BID 14723†), OSVDB (19143†) and SecurityTracker (ID 1014831†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Off-by-one
CWE: CWE-193 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 19588
Nessus Name: SlimFTPd Username/Password Overflow Remote DoS
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/31/2005 🔍
08/31/2005 +0 days 🔍
09/01/2005 +1 days 🔍
09/02/2005 +1 days 🔍
09/06/2005 +4 days 🔍
09/08/2005 +2 days 🔍
09/08/2005 +0 days 🔍
09/08/2005 +0 days 🔍
09/12/2005 +4 days 🔍
03/11/2015 +3467 days 🔍
06/29/2025 +3763 days 🔍

Sourcesinfo

Advisory: critical.lt
Status: Not defined

CVE: CVE-2005-2850 (🔍)
GCVE (CVE): GCVE-0-2005-2850
GCVE (VulDB): GCVE-100-26256
X-Force: 22254
SecurityFocus: 14723 - WhitSoft Development SlimFTPd Remote Denial of Service Vulnerability
OSVDB: 19143 - WhitSoft Development - SlimFTPd Remote Denial of Service Issue
SecurityTracker: 1014831
Vulnerability Center: 9135 - DoS in WhitSoft SlimFTPd Login Process, Medium

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/11/2015 23:39
Updated: 06/29/2025 18:09
Changes: 03/11/2015 23:39 (63), 06/09/2019 11:09 (12), 06/29/2025 18:09 (22)
Complete: 🔍
Cache ID: 216::103

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